How batch will PDF picture on the text clear? Efficient method guide!

The text on PDF pictures is often blurred and weak due to scanning and compression, which is affected by consulting, printing and OCR extraction. Manual processing is inefficient and ineffective. Mastering efficient methods can quickly make the text clear, adapt to office access, data archiving, printing and other scenes, and improve office efficiency.

Why improve the clarity of text on PDF images

1. Improve the reading experience, solve the problem of fuzzy and empty text in PDF pictures, and avoid eye injury for a long time.
2. Ensure the printing effect, clear text can avoid blurring after printing, and meet the needs of office and archiving printing.
3. It is convenient for OCR extraction. Clear text can improve the accuracy of OCR recognition and facilitate subsequent editing and copying of text.
4. Optimize data archiving, so that scanned, compressed PDF image data more standardized, suitable for long-term preservation and access.

Effect Preview

Before treatment

After treatment

Method 1: HeSoft Doc Batch Tool

Recommended Index:★★★★★

Advantages:

1. Supports one-click batch processing of multiple PDF images, compatible with various PDF formats, and adapts to a large number of file optimization scenarios.
2. You can customize the clarity parameters, taking into account sharpening and noise reduction, retaining the original image quality, no additional noise, distortion.
3. Local operation does not need to upload files to protect PDF privacy and security. Xiaobai can get started quickly without professional skills.

Disadvantages: need to download software to use, can not be directly operated online.

Operation steps:

1. Open HeSoft Doc Batch Tool , select "PDF Tools" and click on the "Text on PDF Pictures Clear" module.

2. Click "Add File" or "Import from Folder" to select the files to be processed, and multiple files can be processed in batch.

3. Select all PDF files that need to be optimized and drag the slider to set the clarity intensity.

4. Set the save path of the output PDF, click "Next" and wait for the progress to complete.

Method 2: Adobe Acrobat Professional Tools

Recommended Index:★★★★☆

Advantages: high degree of professionalism, can accurately adjust the clarity of PDF picture text, while supporting noise reduction, contrast optimization, adaptation to professional scenes.

Disadvantages: The software is large in size, requires payment, and has a high operating threshold. Novices need to be familiar with basic operations and occupy more computer memory.

Operation steps

1. Open the Adobe Acrobat, import the PDF file that needs to be optimized, and click the "Tools" option on the left.
2. Find the "Enhance Scan" feature and click, select the "Optimize existing scans" option.
3. Customize the definition, contrast and noise reduction parameters, and confirm the preview effect after it is correct.
4. Click "Save" and select the save path to complete the PDF picture text clarification operation.

Method 3: Dochub online processing tool

Recommended Index:★★★☆ ☆

Advantages: specially designed for PDF optimization, can directly process PDF picture text, convenient operation.

Disadvantages: limited optimization effect, small number of batch processing.

Operation steps

1. The browser searches for the Kiwi PDF Comparer enhance go to the website.
2. Click "Select PDF" to select the file to be processed, and adjust the processing parameters according to the requirements.
3. Click "Enhance PDF" to start and wait for the file to be processed before saving.

Method 4: Online 2 PDF website processing

Recommended Index:★★★☆ ☆

Advantages: No need to download software, open the browser to operate, support cross-system use, adapt to temporary optimization requirements.

Disadvantages: only one PDF file can be processed at a time, and the processing speed is general, which is suitable for ordinary files.

Operation steps

1. The browser search Online2PDF sharpen enter the website.
2. Click Select files to upload the PDF file to be optimized and wait for the file upload to complete.
3. You can also choose to adjust the background, black and white and other functions as needed, and click the "Convert" function after completion.
4. The optimized PDF is automatically saved to the path specified by the browser.

Method 5: DONEPDF online processing tools

Recommended Index:★★★☆ ☆

Advantages: The operation interface is simple and free of advertisements, supports adjustment and optimization parameters, and has high clarity and efficiency.

Disadvantages: Only a single PDF file can be processed at a time, and sales are low.

Operation steps

1. Open the official website of DONEPD, according to the picture instructions to enter the optimization function.
2. Click Select PDF to upload the file to be processed and adjust the processing parameters.
3. Click Start and wait for the file to be processed before saving.

Method 6: PDFNANO online picture optimization

Recommended Index:★★★☆ ☆

Advantages: Clarity effect is natural, and the optimized text is sharper.

Disadvantages: only supports single operation, and the security is general, the page has advertisements.

Operation steps

1. Search the pdfnano official website and enter the optimization function module according to the path shown in the figure.
2. Click "Select PDF" to select the file to be processed and adjust the required parameters
3. Click "Enhance PDF" and wait for the file to be processed before saving.

Method 7: PDFTools online processing

Recommended Index:★★★☆ ☆

Advantages: specially designed for PDF optimization, can directly process PDF picture text, no need to export and import, convenient operation.

Disadvantages: limited optimization effect, small number of batch processing.

Operation steps

1. Browser search pdftools enhance enter the website, select Enhance PDF function.
2. Click "Select PDF" to select the file to be processed, and adjust the processing parameters according to the requirements.
3. Click "Enhance PDF" to start and wait for the file to be processed before saving.

Method 8: PDFCandle online optimization

Recommended Index:★★☆ ☆ ☆

Advantages: No need to register an account, simple operation, free use of basic functions.

Disadvantages: The exported pictures need to be processed separately, the clarity intensity cannot be adjusted, and the file size is limited to 200~500MB.

Operation steps

1. Visit PDFcandle official website, slide down to select the red box, and click to enter the function page.
2. Click the arrow to batch upload all PDF files that need to be optimized.
3. After uploading, you do not need to set parameters, and the system automatically uses default parameters to optimize.
4. Click "Download" to view the effect of file processing after downloading.

The above methods can basically solve the core requirement of clarifying the text on PDF pictures without manual and inefficient processing. According to their own scene selection tools, batch processing, the pursuit of efficient and accurate, selection. HeSoft Doc Batch Tool More suitable, fast, greatly improve office efficiency.